Users need confidence in what happened, what happens next and who can take action.
Fintech product design + development
Make financial workflows clear enough to trust.
Flat 18 is a digital product agency. We design and build financial software for teams dealing with sensitive data, complex rules and decisions people need to understand.
Product direction, interface design and full-stack delivery from one senior team.
Next useful actionClear and reviewable
01Clear states
02Role-aware actions
03Evidence at hand
When the current product is not enough
You may be here because...
Rules, data and permissions are technically correct but too hard to explain in the interface.
You need to improve a sensitive workflow without compromising speed, clarity or operational control.
How Flat 18 helps
One route from uncertainty to a product you can move forward.
We work across the product decisions, interface and software delivery that need to join up for the next release to make sense.
01
Map the risky moments
Find the states, hand-offs and decisions that can create uncertainty for users or operations teams.
02
Design for explanation
Make balances, approvals, payments and status changes readable before people need to ask for support.
03
Build dependable systems
Implement the product surface, data flows and integrations with performance, access and maintainability in mind.
Selected work
Product work built around real complexity.
These are not templates. Each project starts with the people, decisions and constraints that make the product difficult to get right.
Portfolio clarity
Axis Finance
Made live positions, prices and alerts easier to inspect without asking investors to hand over custody.
Payment operations
F18 Pay
Helped merchants manage stores, wallets, invoices and checkout states without losing track of what is live.
Investment operations
Archimedes Finance
Joined onboarding, approvals, reporting and client messages into one readable operating surface.
Before we start
Useful questions, answered plainly.
If the work sounds familiar, send the current product or idea. We’ll help you find the next sensible move.
Do you work on regulated or sensitive financial products?
We can support the product, interface and engineering work around sensitive workflows. Compliance, legal approval and regulated decisions remain with your appropriate specialists.
Can you improve a single workflow rather than rebuild everything?
Yes. A focused payment, reporting, onboarding or approval flow is often the right place to start.
Can you work with existing APIs and data providers?
Yes. We regularly work around existing product constraints, external APIs, data sources and role-based access requirements.
A practical next step
Tell us what needs to move.
Share the goal, the deadline and the part of the product that is hardest to untangle. We’ll reply with the best next route.
Tell us what you want to build
Share the goal, deadline and current state. We will reply with the best route and next step.